CN101977416B - A kind of overload controlling method of MTC device and system - Google Patents
A kind of overload controlling method of MTC device and system Download PDFInfo
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Abstract
The invention discloses the overload controlling method of a kind of machine type communication (MTC) equipment, comprise: when knowing that overload occurs core net, core network element sends overload and starts message to base station, wherein carry MTC group mark, and the signaling of the MTC device of this MTC group of instruction refusal mark correspondence is linked into network and/or refusal data pass through network; MTC group mark is obtained wireless heterogeneous networks (RRC) the connection establishment request message that base station is initiated from MTC device, and according to the MTC group mark obtained, and the MTC group mark that overload beginning message is carried, access control is carried out to MTC device.The invention also discloses a kind of overload control system of MTC device.By method and system of the present invention, achieve the control of MTC device in group granularity, and effectively can reduce the load of core net.
Description
Technical field
The present invention relates to machine type communication field, particularly relate to overload controlling method and the system of a kind of machine type communication (MTC) equipment.
Background technology
Third generation partner program (3GPP, 3rdGenerationPartnershipProject) grouping system (the EPS of evolution, EvolvedPacketSystem) as shown in Figure 1, by the land common file dialog network (E-UTRAN of evolution, EvolvedUniversalTerrestrialRadioAccessNetwork), mobile management unit (MME, MobilityManagementEntity), gateway (S-GW, ServingGateway), data network gateway (P-GW, PacketDataNetworkGateway), home subscriber server (HSS, HomeSubscriberServer), 3GPP authentication and authorization charging (AAA, AuthenticationAuthorizationandAccounting) server, "Policy and Charging Rules Function (PCRF, PolicyandChargingRulesFunction) entity, and other support nodes composition.
Wherein, MME is responsible for the chain of command related work such as process, the contextual management of user's mobile management of mobile management, Non-Access Stratum signaling, the selection of P-GW and S-GW, the accessibility management of mobile terminal under idle condition, and the function such as the selection of tracking area list.
S-GW is the accessing gateway equipment be connected with E-UTRAN, and its function comprises: the local anchor point switched between the Node B (eNodeB, EvolvedNodeB) as evolution, forwarding data between E-UTRAN and P-GW; Be responsible for carrying out buffer memory to pending datas such as pagings; Lawful Interception, data message route, and the charging identifying (QCI, QoSClassIdentifier) during cross operator based on user and service quality (QoS, QualityofService) class.
P-GW is then EPS and packet data network (PDN, PacketDataNetwork) borde gateway, its function comprises: based on the packet filtering of user, Lawful Interception, mobile terminal address distributes, transport layer message QoS label, up and the descending charging based on business, based on Aggregate Maximum Bit Rate (AMBR, AggregateMaximumBitRate) downstream rate ensures, DynamicHost arranges agreement (DHCPv4/v6, DynamicHostConfigurationProtocolv4/v6) function, based on identical guarantee bit rate (GBR, GuaranteedBitRate) the accumulation maximum bit rate (MBR of QCI, MaximumBitRate) downstream rate ensures, also be responsible for the bearing binding of up-downgoing in addition.
EPS supports the intercommunication with non-3 GPP system, and pass through S2a/b/c Interface realization with the intercommunication of non-3 GPP system, P-GW is as the anchor point between 3GPP and non-3 GPP system.Wherein, non-3 GPP system be divided into trusted non-3 gpp IP access and trustless non-3 gpp IP access.
M2M (MachinetoMachine/Man) is a kind of with machine terminal and server, is application and the service of the networking of core with people or with other machines terminal interaction.Machine type communication (MTC, MachineTypeCommunication) by embedding wireless communication module at machine intimate, with radio communication etc. for access means, for client provides comprehensive informatization resolve scheme.
MTC has different features from existing mobile network communication, shows: MTC has different market application scenarioss; MTC is data communication (not needing support voice) substantially; MTC expense is lower, and the resource taken is less; The potential communication terminal with enormous quantity of MTC, the data volume of each terminal is little simultaneously.Therefore, network needs, according to the feature of M2M communication, to increase new function, and optimized existing function.
MTC has an important feature, is exactly packetizing, and a large amount of MTC device according to different application, or can belong to different machine communication users and be divided into different groups.MTC device in same group possesses some identical features, and the communication metrics (flow, duration) as MTC device in same group may be highly similar or equivalent.Because the traffic of individual machine communication terminal may be smaller, also can be therefore for group to the charging of machine communication, can pare down expenses like this, also be enough to tolerance communication terminal to the use of Internet resources.
Because machine type communication is usually directed to a large amount of communication terminals, these communication terminals may for the needs of application, in close moment reported data, thus cause core net, wireless side (comprising radio network controller, NodeB etc.) equipment congested, this congested may be signaling plane, also may be data surface, also all congested both possibility.Therefore, for congested control, be in machine type communication must faced by problem.
Congested a large amount of MTC device access networks that may be certain group has a same characteristic features cause, and need to be that granularity carries out congestion control with group, namely all need to carry out to take group as the congestion control of granularity in core net and wireless side.For core net, the access request for the MTC device belonging to certain group can only take the mode refused; Owing to also there is not group access signaling at present, core net can only refuse the access request (as: attachment request) of single MTC device.Although core net can refuse MTC device access, but the different MTC device belonging to same group continue access still can increase core net load, if the Non-Access Stratum (NAS of core net can will be issued in wireless side, NonAccessStratum) signaling catching, then can reduce rapidly the load of core net.In wireless side interception NAS signaling, which MTC device needs interception to need wireless side to know, and in prior art, core net is under Overload, can only notify that wireless side refuses the wireless heterogeneous networks (RRC for transmitting data or signaling of all terminals initiation, RadioResourceControl) connection request, as shown in Figure 2.When machine communication and common human communication share wireless access network and core network, if machine communication causes network overload, current mechanism but cannot be distinguished, and is limited without exception, and this will affect normal person to person's communication service.
Summary of the invention
In view of this, main purpose of the present invention is the overload controlling method and the system that provide a kind of MTC device, to realize the control of MTC device in group granularity, and effectively reduces the load of core net.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the overload controlling method of a kind of machine type communication (MTC) equipment, the method comprises:
When knowing that overload occurs core net, core network element sends overload and starts message to base station, described overload starts to carry MTC group mark in message, and the data of the MTC device indicating the signaling of MTC device corresponding to refusal described MTC group mark to be linked into network and/or to refuse described MTC group mark correspondence pass through network;
MTC group mark is obtained the Temporary Mobile Subscriber Identity (TMSI) entrained by wireless heterogeneous networks (RRC) connection establishment request message that described base station is initiated from MTC device, and identify according to obtained MTC group, and the MTC group that described overload starts to carry in message identifies, and carries out access control to described MTC device.
Described according to obtained MTC group mark, and the MTC group that overload starts to carry in message identifies, and carries out access control, be specially MTC device:
The MTC group mark that described base station will obtain from RRC connection establishment request message, mates with the described MTC group mark starting to carry in message of transshipping, if the match is successful, then refuses the access of described MTC device; Otherwise, allow the access of described MTC device.
Before core net is transshipped, the method comprises further:
Described core network element divides into groups to described MTC device according to following at least one information, and distributes MTC group mark:
The MTC application that the MTC application message that the MTC group belonging to MTC device that MTC group, MTC server that APN, MTC device that the signing APN (APN) of MTC device, MTC device are carried in the signaling are contracted provide, MTC server provide, "Policy and Charging Rules Function entity (PCRF) provide or MTC group information;
Described MTC group mark, when for described MTC device distribution T MSI, embeds in described TMSI and sends to described MTC device by described core network element.
Present invention also offers a kind of overload control system of MTC device, this system comprises:
Core network element, for when knowing that overload occurs core net, send overload to base station and start message, described overload starts to carry MTC group mark in message, and the data of the MTC device indicating the signaling of MTC device corresponding to refusal described MTC group mark to be linked into network and/or to refuse described MTC group mark correspondence pass through network;
Base station, for obtaining MTC group mark in the TMSI entrained by the RRC connection establishment request message of initiating from MTC device, and according to obtained MTC group mark, and the MTC group that described overload starts to carry in message identifies, and carries out access control to described MTC device.
Described base station is further used for, and by the MTC group mark obtained from RRC connection establishment request message, mates, when the match is successful, refuse the access of described MTC device with the described MTC group mark starting to carry in message of transshipping; When it fails to match, allow the access of described MTC device.
Described core network element comprises: MTC device grouping module, MTC group mark distribution module and MTC group mark sending module, wherein,
Described MTC device grouping module, for dividing into groups to described MTC device according to following at least one information, and distribute MTC group mark: the MTC application that the MTC application message that the MTC group belonging to MTC device that MTC group, MTC server that APN, MTC device that APN, MTC device that MTC device is contracted are carried in the signaling are contracted provide, MTC server provide, PCRF provide or MTC group information;
Described MTC group mark distribution module, for when for described MTC device distribution T MSI, embeds in described TMSI by distributed MTC group mark;
Described MTC group mark sending module, for sending to described MTC device to store the TMSI embedding MTC group mark.
The overload controlling method of a kind of MTC device provided by the present invention and system, when core network element knows that overload occurs core net, send overload to base station and start message, this overload starts to carry MTC group mark in message, and the data of the MTC device indicating the signaling of MTC device corresponding to this MTC group of refusal mark to be linked into network and/or to refuse this MTC group mark correspondence pass through network; Base station obtains MTC group mark from the TMSI entrained by the RRC connection establishment request message that MTC device is initiated, and according to obtained MTC group mark, and the MTC group that overload starts to carry in message identifies, and carries out access control to MTC device.
By method and system of the present invention, achieve the group character to MTC device, and achieve the control of MTC device in group granularity by this group character; By to the premature beats of MTC device in group granularity, effectively can reduce the load of core net, and normal person to person's communication service can not be affected on the premature beats of core net.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of EPS in prior art;
Fig. 2 is the schematic diagram of core net overloading control in prior art;
Fig. 3 is that in the present invention, MTC group is identified at the embedding schematic diagram in TMSI;
Fig. 4 is the group character method flow diagram of a kind of MTC device of the present invention;
Fig. 5 is the overload controlling method flow chart of a kind of MTC device of the present invention;
Fig. 6 is the overload controlling method flow chart of the embodiment of the present invention one;
Fig. 7 is the overload controlling method flow chart of the embodiment of the present invention two.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
For realizing the group character to MTC device, and realized the control of MTC device in group granularity by this group character, the present invention provide firstly a kind of group character method of MTC device, comprising:
First, core network element divides into groups to MTC device according to following at least one information, and distributes MTC group mark:
The MTC application that the MTC application message that the MTC group belonging to MTC device that MTC group, MTC server that APN, MTC device that the signing APN (APN, AccessPointName) of MTC device, MTC device are carried in the signaling are contracted provide, MTC server provide, PCRF provide or MTC group information;
Then, MTC group mark (MTCClassificationID), when distributing Temporary Mobile Subscriber Identity (TMSI, TemporaryMobileSubscriberIdentity) for MTC device, embeds in this TMSI by core network element.
At global unique temporary identity (GUTI, or shorten temporary mark (S-TMSI GloballyUniqueTemporaryIdentity), ShortedTemporaryMobileSubscriberIdentity) MTC group mark is embedded in TMSI, as shown in Figure 3, MTC group mark can take the byte of more than 1, in Fig. 3 26bit position to 16bit position totally 8 bits can represent that MTC group identifies.In addition, TMSI in the present invention includes: MME Temporary Mobile Subscriber Identity (M-TMSI, MMETemporaryMobileSubscriberIdentity), packet domain temporary mobile subscriber mark (P-TMSI, PacketTemporaryMobileSubscriberIdentity).MTC device can carry APN by following message: Attach Request message, tracking fields update request message or Routing Area Update request message etc.
Core network element described in the present invention comprises: MME, Serving GPRS Support Node (SGSN, ServicingGPRSSupportNode) etc.Distribute the method for MTC group mark as shown in Figure 4 for MME, MME, specifically comprise the following steps:
Step 401, UE (comprising MTC device) initiates Attach Request message to MME.
Step 402, MME knows that this UE belongs to MTC device, the MTC application message that MTC group belonging to the MTC device then provided according to the APN carried in its Attach Request message or signing APN or signing MTC group or MTC server or MTC server provide or the MTC application that PCRF provides or MTC group information, this MTC device is divided into groups, give its corresponding MTC group mark, and this MTC group mark is embedded in the TMSI into MTC device distribution, as shown in Figure 3.
Step 403, after being assigned with TMSI for MTC device, MME issues attachment and accepts message to MTC device, carries newly assigned TMSI (wherein comprising MTC group mark) in this message, and the mask of corresponding MTC group mark.
Step 404, is receiving the newly assigned TMSI of MME, and after the mask of corresponding MTC group mark, MTC device preserves this TMSI and mask, and sends attachment and complete message to MME.
To should the group character method of MTC device, present invention also offers a kind of core network element, comprising: MTC device grouping module, MTC group mark distribution module and MTC group identify sending module.Wherein, MTC device grouping module, for dividing into groups to described MTC device according to following at least one information, and distribute MTC group mark: the MTC application that the MTC application message that the MTC group belonging to MTC device that MTC group, MTC server that APN, MTC device that APN, MTC device that MTC device is contracted are carried in the signaling are contracted provide, MTC server provide, PCRF provide or MTC group information.MTC group mark distribution module, for when for this MTC device distribution T MSI, embeds distributed MTC group mark in TMSI.MTC group mark sending module, for sending to this MTC device to store the TMSI embedding MTC group mark.
Based on the group character method of above-mentioned MTC device, for realizing, to the control of MTC device in group granularity, present invention also offers a kind of overload controlling method of MTC device, as shown in Figure 5, mainly comprise the following steps:
Step 501, when overload appears in core net, core network element (MME or SGSN) knows that the application due to certain MTC group causes network congestion, certain MTC group mark that this application is corresponding, this MTC group is then selected to identify, the MTC device access of the corresponding group of refusal.
Step 502, core network element sends overload and starts message to base station, this overload starts the MTC group mark of carrying corresponding MTC group in message, and the data of the MTC device indicating the signaling of MTC device corresponding to this MTC group of refusal mark to be linked into network and/or to refuse this MTC group mark correspondence pass through network.That is, core network element starts message by this overload, the measure that informing base station should be taked in order to the load alleviated in network, the content that this overload starts message can be: refusal specifies the signaling of the MTC device of MTC group mark to be linked into network and/or refusal specifies the data of the MTC device of MTC group mark to pass through network.
Subsequently, base station, when receiving the RRC connection establishment request message that MTC device is initiated, obtains MTC group mark from the TMSI entrained by this message, and according to the MTC group mark obtained, and the MTC group that overload starts to carry in message identifies, and carries out access control to corresponding MTC device.Be specially: the MTC group mark that base station will obtain from RRC connection establishment request message, the MTC group mark starting to carry in message with overload is mated, if the match is successful, then show that corresponding MTC device belongs to the MTC group of refusal access, thus refuse the access of this MTC device; Otherwise, show that corresponding MTC device does not belong to the MTC group of refusal access, thus allow the access of this MTC device.Wherein, according to the instruction of core network element, this refusal access comprise: refusal MTC device signaling be linked into network and/or refusal MTC device data pass through network.
Base station of the present invention comprises RNC, eNB etc.As shown in Figure 6, for MME is when carrying out premature beats, specifies eNB interception to belong to the flow chart of all radio connection request of certain MTC group, mainly comprising the following steps:
Step 601, MME know cause network congestion due to the application of certain MTC group time, send overload to eNB and start message, and carry should the MTC group mark of MTC group within the message, the signaling of the MTC device that this MTC group of instruction refusal mark is corresponding is linked into network and/or refuses the data that this MTC group identifies the MTC device of correspondence passes through network.ENB identifies the MTC group that MME sends and indication information stores.
Step 602, MTC device sends RRC connection establishment request message to eNB.
Step 603, the MTC group mark that eNB comprises according to the TMSI carried in RRC connection establishment request message, carry out access control to this MTC device, concrete connection control method, as described in abovementioned steps 502, repeats no more herein.
It should be noted that, MTC device sends in RRC connection establishment request message to eNB and includes to indicate this RRC connection establishment request message to be the request of signaling RRC connection establishment, or the mark of data RRC connection establishment request, eNB identifies according to this mark, thus according to the indication information of premature beats, perform rejection signaling access network and/or the refusal data premature beats by network.
In addition, the method that eNB obtains MTC group mark from TMSI is specially: after eNB receives the RRC connection request message that MTC device sends, obtain TMSI mark wherein, according to the specific identifier in RRC connection request message, can know in the UEID of this message and carry MTC group mark, then from TMSI, obtain MTC group mark according to the mask of correspondence.This mask is a binary number, mask and TMSI carry out with operation after, acquired results move to left setting figure place after, namely obtain MTC group identify.As in Fig. 3, MTC group mark occupies 23-16 bit, then mask is FF00 (16 systems represent), mask carry out with operation after, move to left 8 obtain MTC group identify.It should be noted that, the mask of MT reconnaissance C group mark correspondence both in abovementioned steps 404, after sending to MTC device, then can send to eNB by MTC device by RRC connection establishment request message by core network element; Certainly, also can not be sent by MTC device, and directly be configured on eNB.
Step 604, eNB returns RRC connection establishment request-reply message to MTC device.
The overload controlling method of corresponding above-mentioned MTC device, present invention also offers a kind of overload control system of MTC device, comprising: core network element and base station.Wherein, core network element, for when knowing that overload occurs core net, send overload to base station and start message, this overload starts to carry MTC group mark in message, and the data of the MTC device indicating the signaling of MTC device corresponding to this MTC group of refusal mark to be linked into network and/or to refuse this MTC group mark correspondence pass through network.Base station, for obtaining MTC group mark in the TMSI entrained by the RRC connection establishment request message of initiating from MTC device, and according to obtained MTC group mark, and the MTC group that overload starts to carry in message identifies, and carries out access control to this MTC device.Concrete: by the MTC group mark obtained from RRC connection establishment request message, the MTC group mark starting to carry in message with overload is mated, when the match is successful, and the access of refusal MTC device; When it fails to match, allow the access of MTC device.
Again as shown in Figure 7, be access control flow chart during page response, mainly comprise the following steps:
Step 701, when core net needs to certain MTC device transmitting downlink data, MME sends beep-page message by eNB to MTC device.In the beep-page message that MME sends to eNB, carry TMSI, and in TMSI, comprise MTC group mark, and the data of the MTC device indicating the signaling of MTC device corresponding to this MTC group of refusal mark to be linked into network and/or to refuse this MTC group mark correspondence pass through network; ENB needs to store MTC group mark and this indication information.
Step 702, sets up RRC and is connected between MTC device with eNB, MTC terminal sends RRC connection establishment request message or (DirectTransfer) message that direct transfers to eNB, and carry MTC group mark in this message, this MTC group mark is included in TMSI; ENB, according to pre-configured rule (mask), obtains MTC group mark from TMSI.
Step 703, the MTC group mark that eNB comprises according to the TMSI carried in RRC connection establishment request message, carries out access control to this MTC device.
Step 704, if eNB allows MTC device access, so eNB returns RRC connection establishment request-reply message to MTC device.
In sum, by present invention achieves the group character to MTC device, and achieve the control of MTC device in group granularity by this group character; By to the premature beats of MTC device in group granularity, effectively can reduce the load of core net, and normal person to person's communication service can not be affected on the premature beats of core net.In addition, obtain MTC group mark in the TMSI that base station can directly comprise from radio access layer message, and the MTC group mark may carried in NAS message need not be resolved, this also simplifies the operation of base station.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (4)
1. an overload controlling method for machine type communication (MTC) equipment, it is characterized in that, the method comprises: core network element divides into groups to MTC device, and distributes MTC group mark; Described MTC group mark, when distributing Temporary Mobile Subscriber Identity (TMSI) for described MTC device, embeds in described TMSI and sends to described MTC device by described core network element;
The method also comprises: when knowing that overload occurs core net, core network element sends overload and starts message to base station, described overload starts to carry MTC group mark in message, and the data of the MTC device indicating the signaling of MTC device corresponding to refusal described MTC group mark to be linked into network and/or to refuse described MTC group mark correspondence pass through network;
MTC group mark is obtained the Temporary Mobile Subscriber Identity (TMSI) entrained by wireless heterogeneous networks (RRC) connection establishment request message that described base station is initiated from MTC device, and identify according to obtained MTC group, and the MTC group that described overload starts to carry in message identifies, access control is carried out to described MTC device, be specially: the MTC group mark that described base station will obtain from RRC connection establishment request message, mate with the described MTC group mark starting to carry in message of transshipping, if the match is successful, then refuse the access of described MTC device; Otherwise, allow the access of described MTC device.
2. the overload controlling method of MTC device according to claim 1, it is characterized in that, described core network element divides into groups to described MTC device according to following at least one information:
The MTC application that the MTC application message that the MTC group belonging to MTC device that MTC group, MTC server that APN, MTC device that the signing APN (APN) of MTC device, MTC device are carried in the signaling are contracted provide, MTC server provide, "Policy and Charging Rules Function entity (PCRF) provide or MTC group information.
3. an overload control system for MTC device, is characterized in that, this system comprises:
Core network element, for dividing into groups to MTC device, and distributes MTC group mark; Described MTC group mark, when distributing Temporary Mobile Subscriber Identity (TMSI) for described MTC device, embeds in described TMSI and sends to described MTC device by described core network element;
Also for when knowing that overload occurs core net, send overload to base station and start message, described overload starts to carry MTC group mark in message, and the data of the MTC device indicating the signaling of MTC device corresponding to refusal described MTC group mark to be linked into network and/or to refuse described MTC group mark correspondence pass through network;
Base station, for obtaining MTC group mark in the TMSI entrained by the RRC connection establishment request message of initiating from MTC device, and according to obtained MTC group mark, and the MTC group that described overload starts to carry in message identifies, and carries out access control to described MTC device;
Be further used for, by the MTC group mark obtained from RRC connection establishment request message, mating with the described MTC group mark starting to carry in message of transshipping, when the match is successful, refusing the access of described MTC device; When it fails to match, allow the access of described MTC device.
4. the overload control system of MTC device according to claim 3, it is characterized in that, described core network element comprises: MTC device grouping module, MTC group mark distribution module and MTC group identify sending module, wherein,
Described MTC device grouping module, for dividing into groups to described MTC device according to following at least one information, and distribute MTC group mark: the MTC application that the MTC application message that the MTC group belonging to MTC device that MTC group, MTC server that APN, MTC device that APN, MTC device that MTC device is contracted are carried in the signaling are contracted provide, MTC server provide, PCRF provide or MTC group information;
Described MTC group mark distribution module, for when for described MTC device distribution T MSI, embeds in described TMSI by distributed MTC group mark;
Described MTC group mark sending module, for sending to described MTC device to store the TMSI embedding MTC group mark.
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| CN102098759A (en) * | 2011-02-18 | 2011-06-15 | 电信科学技术研究院 | Method and device for access control |
| KR101762730B1 (en) | 2011-02-22 | 2017-07-31 | 삼성전자주식회사 | Method and apparatus for controlling machine type communication device based on group in mobile communication system |
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